From: Uma Shankar <uma.shan...@intel.com>

Send Dynamic Range and Mastering Infoframe (DRM for HDR metadata)
as SDP packet to LSPCON following the DP spec. LSPCON receives the
same and sends it to HDMI sink.

v2: Suppressed some warnings. No functional change.

Signed-off-by: Uma Shankar <uma.shan...@intel.com>
---
 drivers/gpu/drm/drm_atomic_state_helper.c   | 1 +
 drivers/gpu/drm/drm_atomic_uapi.c           | 1 +
 drivers/gpu/drm/i915/display/intel_lspcon.h | 1 +
 include/drm/drm_connector.h                 | 1 +
 4 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c 
b/drivers/gpu/drm/drm_atomic_state_helper.c
index 7cf3cf936547..7cf98c06f424 100644
--- a/drivers/gpu/drm/drm_atomic_state_helper.c
+++ b/drivers/gpu/drm/drm_atomic_state_helper.c
@@ -468,6 +468,7 @@ __drm_atomic_helper_connector_duplicate_state(struct 
drm_connector *connector,
 
        if (state->hdr_output_metadata)
                drm_property_blob_get(state->hdr_output_metadata);
+       state->hdr_metadata_changed = false;
 
        /* Don't copy over a writeback job, they are used only once */
        state->writeback_job = NULL;
diff --git a/drivers/gpu/drm/drm_atomic_uapi.c 
b/drivers/gpu/drm/drm_atomic_uapi.c
index a1e5e262bae2..4c520e0b9872 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -734,6 +734,7 @@ static int drm_atomic_connector_set_property(struct 
drm_connector *connector,
                                val,
                                sizeof(struct hdr_output_metadata), -1,
                                &replaced);
+               state->hdr_metadata_changed |= replaced;
                return ret;
        } else if (property == config->aspect_ratio_property) {
                state->picture_aspect_ratio = val;
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.h 
b/drivers/gpu/drm/i915/display/intel_lspcon.h
index b2051f236223..bc34124f532e 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.h
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.h
@@ -38,4 +38,5 @@ void lspcon_drm_write_infoframe(struct intel_encoder *encoder,
                                const struct intel_crtc_state *crtc_state,
                                unsigned int type,
                                const void *frame, ssize_t len);
+
 #endif /* __INTEL_LSPCON_H__ */
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 221910948b37..28df268aa1a7 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -661,6 +661,7 @@ struct drm_connector_state {
         * DRM blob property for HDR output metadata
         */
        struct drm_property_blob *hdr_output_metadata;
+       u8 hdr_metadata_changed : 1;
 };
 
 /**
-- 
2.26.0

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